Q. If a conductor 0.2m long moves with a velocity of 0.3m/s in a magnetic field of 5T, calculate the emf induced if magnetic field, velocity and length of conductor are mutually perpendicular to each other.

View solution

Q. Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V if magnetic field, velocity and length of conductor are mutually perpendicular to each other.

View solution

Q. Find the strength of the magnetic field in a conductor 0.5m long moving with a velocity of 10m/s, inducing an emf of 20V if magnetic field, velocity and length of conductor are mutually perpendicular to each other.

View solution

Q. What does emf stand for?

View solution

Q. What is emf?

View solution

Q. According to Faraday’s laws of electromagnetic induction, an emf is induced in a conductor whenever?

View solution

Q. Direction of induced emf is determined by __________

View solution

Q. “The direction of an induced e.m.f. is always such that it tends to set up a current opposing the motion or the change of flux responsible for inducing that e.m.f.”, this is the statement for?

View solution

Q. According to Fleming’s right hand rule, the thumb points towards?

View solution

Q. According to Fleming’s right hand rule, the index finger points towards?

View solution

Q. According to Fleming’s right hand rule, the middle finger points towards?

View solution

Q. The relation between the direction of induced emf and the direction of motion of the conductor is?

View solution

Q. The relation between the direction of induced emf and the direction of magnetic flux is _______

View solution

Q. The relation between the direction of magnetic flux and the direction of motion of the conductor is _______

View solution

Q. Which, among the following, is the formula for induced emf?

View solution

Q. According to _________________ induced emf is equal to rate of change of magnetic flux.

View solution

Q. The emf induced in a coil having N turns is?

View solution

Q. According to ____________________ induced emf oppose the cause due to which they are produced.

View solution

Q. North pole induces __________

View solution

Q. What is the principle of the transformer?

View solution