Which of the following is a fundamental quantity?
A. Heat capacity B. Electric current C. Torque D. Reactance E. Density Correct Answer: Option B – Electric current
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 – 2.0ΩProducts
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Land Ownership Principles and Transaction Laws in Nigeria
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