Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
Which of the following statements is not correct?
A magnetic Held is a region where a magnetic force can be detected.
Magnetic fields are scalar quantities.
The magnitude of the magnetic force experienced by a moving charge depends on the speed on the charge.
the angle between the direction of the earth’s magnetic held and the horizontal is called the angle of dip.
Iron filings can be used to trace out the magnetic field around a bar magnet.
Correct answer is B
No explanation has been provided for this answer.
Lenz’s law of electromagnetic induction states that
electromotive force is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit
the induced current in a conductor is in such a direction as to oppose the change producing it
the induced e.m.f. in a circuit is proportional to the rate of change of number of lines of force linking the circuit
a force is exerted on a current carrying conductor in a magnetic field
the induced e.m.f. is proportional to the current producing the magnetic flux.
Correct answer is B
No explanation has been provided for this answer.
150.0s
90.0s
36.0s
20.0s
2.7s
Correct answer is A
E = V2t/R
same current to flow through the electrical appliances and the lamps
maximum energy to be consumed at least cost
same fuse to be used for the electrical appliances and the lamps
voltage across the appliances not to be affected when the lamps are switched on and off
heat losses to be minimized
Correct answer is D
No explanation has been provided for this answer.
0.42 m
2.40 m
6.25 m
183.75 m
590.00 m
Correct answer is B