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NABTEB 2025 BASIC ELECTRICITY ANSWERS
OBJ: -
01-10: CABAAACCAB
11-20: CACBDCADCA
21-30: DCCDBBCBDC
31-40: CABABCCACC
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_INSTRUCTION: ANSWER FIVE(5) QUESTIONS ONLY_
(1ai)
Capacitive reactance is the opposition that a capacitor offers to the flow of alternating current (AC) due to the capacitor’s ability to store and release energy in its electric field. It is inversely proportional to both the frequency of the AC signal and the capacitance.
(1aii)
Inductive reactance is the opposition that an inductor offers to the flow of alternating current due to the inductor’s property of generating a back electromotive force (emf) when the current changes. It is directly proportional to both the frequency of the AC signal and the inductance.
(1bi)
Peak Value of the Voltage(V₀):
The peak value is the amplitude of the sine function:
V₀ = 30 V
(1bii)
RMS Value of the Voltage(Vrms):
RMS value for a sinusoidal voltage is:Vrms = V₀/√2
Vrms = 30/√2 = 30 /1.414 ≈ 21.21V
(1biii)
Angular Frequency(ω):
The angular frequency (ω) is the coefficient of t in the sine function, which is:
ω = 1000π rad/s
(1biv)
Frequency(f):
Frequency is related to angular frequency by:ω = 2πf.
Rearranging for f gives f = ω/2π
f = 1000π/2π = 500Hz
(1bv)
Period(T):
Period is the reciprocal of frequency: T = 1/f
T = 1/500 = 0.002s
===========================
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(3ai)
Resistance is the property of a material or device that opposes the flow of electric current through it. It determines how much current will flow for a given voltage applied across the material. It is measured in ohms (Ω).
(3aii)
Inductance is the property of an electrical conductor by which a change in current flowing through it induces an electromotive force (emf) either in the conductor itself or in a nearby conductor. It is measured in Henry (H).
(3bi)
Yellow, Violet, Red, Gold:
-Yellow = 4 (first digit)
-Violet = 7 (second digit)
-Red = 2 (multiplier, 10²)
-Gold = ±5% tolerance
Resistance = 47 × 10² Ω = 4700 Ω = 4.7kΩ
Tolerance = ±5%
(3bii)
Blue, Red, Orange, Silver:
-Blue = 6 (first digit)
-Red = 2 (second digit)
-Orange = 3 (multiplier, 10³)
-Silver = ±10% tolerance
Resistance = 62 × 10³ Ω = 62000 Ω = 62kΩ
Tolerance = ±10%
(3biii)
Brown, Grey, Black, Gold:
-Brown = 1 (first digit)
-Grey = 8 (second digit)
-Black = 0 (multiplier, 10⁰)
-Gold = ±5% tolerance
Resistance = 18 × 10⁰ Ω = 18Ω
Tolerance = ±5%
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===========================
(4a)
Ohm’s law states that the current flowing through a conductor is directly proportional to the voltage applied across it, provided the temperature and other physical conditions remain constant. Mathematically, it is expressed as: V = IR
(4b)
(i) They cannot be recharged once exhausted.
(ii) They have a limited lifespan and lose capacity over time.
(iii) They may have a high internal resistance which reduces efficiency.
(iv) They can leak or corrode, causing damage to devices.
(v) The voltage output may drop gradually during use.
(4c)
Given:
-R₁ = 10Ω
-R₂ = 15Ω
-Total emf = 4 × 2 = 8V
-r = 0.2Ω (internal resistance)
-Resistors are in parallel
Equivalent resistance of the parallel combination:
1/Req = (1/R₁ +
1/R₂) = 1/10 + 1/15 = 3+2/30 = 5/30
Req = 30/5 = 6Ω
+1
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-Treatment in final- accounts:
(i)Profit and Loss Account: The decrease is treated as a gain or a reduction in expense and is credited to the profit and loss account, increasing net profit.
(ii)Balance Sheet: The decrease is deducted from the existing provision for doubtful debts, leading to a smaller reduction from the total debtors balance.
(4c)
Provision for discount on debtors; This is an allowance made for potential discounts that might be given to debtors for early or prompt payment. It acknowledges that not all debtors may pay the full amount.
-Treatment in final accounts-
(i)Profit and Loss Account: This provision is treated as an expense and is debited to the profit and loss account.
(ii)Balance Sheet: The amount provided is deducted from the debtors balance.
(4d)
Provision for discount on creditors; This is an allowance made for potential discounts that might be received from creditors for early or prompt payment. It acknowledges that the business might not have to pay the full amount owed.
-Treatment in final accounts-
(i)Profit and Loss Account: This provision is treated as a gain and is credited to the profit and loss account.
(ii)Balance Sheet: The amount is deducted from the creditors balance.
(4e)
Provision for depreciation; Depreciation is the systematic allocation of the cost of a tangible asset over its useful life. It reflects the reduction in the asset's value due to wear and tear, usage, or obsolescence.
-Treatment in final accounts-
(i)Profit and Loss Account: Depreciation is treated as an expense and is debited to the profit and loss account.
(ii)Balance Sheet: The accumulated depreciation is shown as a deduction from the cost of the asset, reflecting its net book value.
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2025 WAEC FINANCIAL ACCOUNTING QUESTIONS AND ANSWERS
OBJ: -
01-10: BBAAABDCDC
11-20: AAABDABCAC
21-30: AADCCDCAAB
31-40: DBCDCBAABD
41-50: CCDACAADBA
COMPLETED
ESSAY: -
(1a)
(i) Surplus - Net profit
(ii) Accumulated fund - Capital
(iii) Receipts and payments account - Cash book
(iv) Deficit - Net loss
(v) Income and expenditure account - Profit and loss account
(1b)
(PICK ANY THREE)
(i) A social club is formed to serve the interests of its members, while a limited liability company is established to make profits for its shareholders.
(ii) A social club prepares an Income and Expenditure Account to determine surplus or deficit, while a limited liability company prepares a Profit and Loss Account to calculate net profit or loss.
(iii) A social club receives its funds mainly from members’ subscriptions, donations, and grants, while a limited liability company raises funds through share capital, loans, and retained earnings.
(iv) A social club uses any surplus to improve services or facilities for its members, while a limited liability company distributes its profits as dividends to shareholders or reinvests them into the business.
(v) A social club is usually governed by the rules of its constitution or charity laws, while a limited liability company is regulated under company law with strict reporting and disclosure requirements.
(2a)
=SELLER=
(i) An invoice serves as a document that confirms the sale of goods or services between the seller and the buyer.
(ii) Serves as proof of a transaction in case of disputes or legal matters.
(iii) It is Used to track outstanding payments and know which customers owe money and how much
=BUYER=
(i) An invoice acts as a document that confirms the buyer’s purchase of goods or services.
(ii) Invoices help the buyer keep track of their purchases and expenses.
(iii) Invoice assists in tracking expenses and managing financial records.
(2b)
(I) It makes it easier to manage and locate financial information by grouping similar transactions together.
(ii) It allows different personnel to handle different ledgers (e.g. sales, purchases), improving accuracy and efficiency
(iii) It helps in simplicity the identification and correction of errors within specific areas of the accounts.
(3)
(i)Purpose: Private company financial statements focus on profit and shareholder value, while government statements prioritize accountability, transparency, and public service delivery.
(ii)Reporting Standards: Private companies often use International Financial Reporting Standards (IFRS) or local GAAP. Government entities may use specific public sector accounting standards, such as IPSAS.
(iii)Users: Private company reports are primarily used by investors and creditors. Government reports are for citizens, oversight bodies, and other government agencies.
(iv)Focus: Private company statements emphasize profitability and financial performance. Government statements highlight budget compliance, service effectiveness, and fund management.
(v)Accounting basis: Private companies often use the accrual basis, while government entities may use modified accrual or cash basis, depending on the jurisdiction.
(4a)
Increase in provision for doubtful debts; This represents an increase in the estimated amount of money that a business expects it will not be able to collect from its debtors (customers who owe money).
-Treatment in final- accounts:
(i)Profit and Loss Account: The increase is treated as an expense and debited to the profit and loss account, reducing net profit.
(ii)Balance Sheet: The increase is added to any previous provision for doubtful debts and deducted from the total debtors balance to show the net realizable value of the debts.
(4b)
Decrease in provision for doubtful debts; This indicates a reduction in the estimated amount of uncollectible debts, meaning the business now expects to recover more from its debtors than previously anticipated.
