Physics Past Questions and Answers

Question 881:

• JAMB 1997

If 8 x 10${}^{-2}$ J of work is required to move 100$\mu$C of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y is

A. 4.0 x 10² v
B. 4.0 x 10⁴ v
C. 8.0 x 10² v
D. 8.0 x 10^-2 v

Question 882:

• JAMB 1997

In a meter bridge experiment, two resistor 2$\mathrm{\Omega }$ and 3$\mathrm{\Omega }$ occupy the left and right gaps respectively. Find the balance point from the left side of the bridge

A. 20cm
B. 40cm
C. 60cm
D. 80cm

Question 883:

• JAMB 1997

Two 50$\mu$F parallel plate capacitors are connected in series. The combined capacitor is then connected across a 100-V battery. The charge on each plate of the capacitor is

A. 5.00 x 10^-5C
B. 2.50 x 10^-3C
C. 1.25 x 10^-3C
D. 1.00 x 10^-2C

Question 884:

• JAMB 1997

What is the total electrical energy consumed by using an electric cooker rated 1000W for 5 hrs?

A. 5.3 x 10³J
B. 6.5 X 10³J
C. 1.8 X 10⁷J
D. 2.3 X 10⁷J

Question 885:

• JAMB 1997

The power dissipated in an a.c. circuit with an r.m.s, current of 5A, r.m.s voltage of 10V and a phase angle of 60^o is

A. 25W
B. 50W
C. 120W
D. 125W