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\(\Omega\) and 3\(\Omega\) 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