Loading [MathJax]/jax/output/HTML-CSS/jax.js

JAMB Physics Past Questions & Answers - Page 339

1,691.

A house has ten 40W and five 100W bulbs. How much will it cost the owner of the house to keep them lit for 10 hours if the cost of a unit is 5N?

N90

N50

N45

View answer & explanation

Correct answer is C

P = 40 x 10 + 100 x 5

P = 400 + 500 = 900W

Cost = $\frac{900 \times 10 \times 5}{1000}$

Cost = N45

1,692.

Which of the following obeys ohms laws?

electroytes

metals

diode

glass

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

1,693.

A cell of emf 1.5V is connected in series with a 1Ω resistor and a current of 0.3A flows through the resistor. Find the internal resistance of the cell

4.0Ω

3.0Ω

1.5Ω

1.0Ω

View answer & explanation

Correct answer is A

r = $\frac{E}{I} - R$

r = $\frac{1.5}{0.3} - 1$

r = 4 $\Omega$

1,694.

Capacitors are used in the induction coil to

control circuits

prevent distortion of electric fields

prevent electric sparks

dissipate energy

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

1,695.

Calculate the force acting on an electron of charge 1.5 x 10^-19C placed in an electric field of intensity 10⁵Vm^-1

1.5x10^-11N

1.5x10^-12N

1.5x10^-13N

1.5x10^-14N

View answer & explanation

Correct answer is D

F = qE

F = 1.5 x 10^-19 x 10⁵

F = 1.5 x 10^-14N

JAMB Subjects

Literature in English

Islamic Religious Knowledge

Christian Religious Knowledge

Aptitude Tests

Microsoft Office Questions and Answers

Quantitative Reasoning Questions and Answers

Personality Test

Typing Speed and Accuracy Test

Verbal Reasoning Questions and Answers

Data Interpretation Questions and Answers

Situational Judgement Questions and Answers

Nigeria General Knowledge Questions and Answers

Abstract Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

Puzzles Questions and Answers

Numerical Reasoning Questions and Answers

See all →

View latest jobs in Nigeria today