The diagram below illustrates an isolated metal sphere carrying charge W in a medium whose permittivity is so. The magnitude of the electric field intensity at P can be expressed as
A. Q²/(4πεor²) B. Q/(4πεor²) C. Q/(4πεor) D. Q²/(4πεor²) E. Q/(4πεor)² Correct Answer: Option B – Q/(4πεor²)
Soft iron is used in making the armature of an electric bell because it?
A. retains its magnetism for a long time B. Loses its magnetism readily C. Produces permanent magnets D. is not easily magnetized E. decreases the magnetic effect of a direct current Correct Answer: Option B – Loses its magnetism...
A cell of e.m.f. 1.5V is connected in series with a resistor of resistance 39. A high-resistance voltmeter connected across the cell registers only 0.9V. Calculate the internal resistance of the cell
A. 1.85Ω B. 2.0Ω C. 2.4Ω D. 4.5Ω E. 5.0Ω Correct Answer: Option B – 2.0Ω
Lenz’s law of electromagnetic induction states that ______?
A. e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit. B. the induced current in a conductor is in such a direction as to oppose the change producing it C. the magnitude of the induced e.m.f. in a circuit is...
The diagram below illustrates the conversion of a galvanometer of resistance 29 to an ammeter. The galvanometer gives a full-scale deflection for a current of 10mA. Calculate the value of R.
A. 2.0 x 10³ Ω B. 2.0 x 10² Ω C. 2.0 x 10−¹ Ω D. 2.0 x 10−² Ω E. 2.0 x 10−³ Ω Correct Answer: Option E – 2.0 x 10−³ ΩProducts
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Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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Co-Ownership Structures and Land Acquisition Methods in Nigeria
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Rights in Community Land and Fundamental Land Concepts in Nigeria
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Customary Land Control and the Origins of Nigeria's Land Use Act
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Land Ownership Principles and Transaction Laws in Nigeria
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