Post Utme Physics Past Questions and Answers

Question 716:

An insulated rod when rubbed with a material acquires ____________

A. Negative charge if it is made of glass and rubbed with silk
B. No charge if its is made of glass and rubbed with fur
C. No charge if it is made of copper and rubbed with the silk
D. A positive charge if it is made of cooper and rubbed with fur

Question 717:

Which of the following is Obeys Ohm’s Law?

A. Glass
B. Diode
C. All electrolytes
D. All metals

Question 718:

Am equipment whose power is 1500w and resistance is 375 ohms would draw a current of ____________

A. 0.10A
B. 2.00A
C. 4.00A
D. 77.5.5A

Question 719:

To convert an alternating current dynamo into a direct current dynamo, the ____________

A. Number of turns in the coil is increased
B. Strength of the field magnet is increased
C. Slip rings are replaced with a split commuter
D. Coil is wound on a soft iron armature

Question 720:

If current carrying coil is mounted on a metal frame, the back e.m.f. induced in the coil causes ____________

A. Inductance
B. Eddy currents
C. Electromagnetism
D. Dipole moment