Physics Past Questions and Answers

The p.d across a parallel-plate capacitor is 10³V. If the distance between the two plates is 10cm. Calculate the magnitude of the electric field strength between the plates.

A 1.0 x 10⁴Vm^-1
B 1.0 x 10⁵Vm^-1
C 1.5 x 10⁵Vm^-1
D 2.0 x 10⁵Vm^-1

Question 1742:

Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by

A Induction
B Friction
C Conduction
D Convection

Question 1743:

Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by

A Induction
B Friction
C Conduction
D Convection

Question 1744:

Which of the following factors does not affect the e.m.f of a primary cell? Its

A Size
B Internal resistance
C Operating temperature
D Duration of usage

Question 1745:

Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively

A S and N
B N and N
C S and S
D N and S