Kumar Mittal Solutions for Exercise 1: QUESTIONS

Author:Kumar Mittal

Kumar Mittal Physics Solutions for Exercise - Kumar Mittal Solutions for Exercise 1: QUESTIONS

Attempt the practice questions from Exercise 1: QUESTIONS with hints and solutions to strengthen your understanding. NOOTAN ISC PHYSICS Class 12 Part-1 solutions are prepared by Experienced Embibe Experts.

Questions from Kumar Mittal Solutions for Exercise 1: QUESTIONS with Hints & Solutions

MEDIUM
12th ICSE
IMPORTANT

Write expression for the magnetic field due to an infinitely-long current-carrying straight conductor.

MEDIUM
12th ICSE
IMPORTANT

The figure shows two semicircular current-loops of radii a1 and a2. Find the magnitude and direction of the magnetic field at the common centre O.

Question Image

MEDIUM
12th ICSE
IMPORTANT

An electron moving with velocity 5.0×107 ms-1 enters a magnetic field of 1.0 N A-1 m-1 at an angle of 30° to the field. Calculate the force on the electron.

MEDIUM
12th ICSE
IMPORTANT

A current of 5.0 A is flowing upwards in a long vertical wire placed in a uniform horizontal northward magnetic field of 0.020 T. How much force and in what direction will the field exert on 0.06 m length of the wire?  

EASY
12th ICSE
IMPORTANT

Two long, parallel, straight wires A  and B carrying-currents of 8.0 A and 5.0 A in the same direction are placed 4.0 cm apart. Estimate the force on a 10 cm section of wire A .

HARD
12th ICSE
IMPORTANT

A long horizontal rigidly supported wire carries a current of100 A. Directly above it and parallel to it is a fine wire that carries a current of 200 A and weighs 0.05 N/m. How far above the lower wire should the fine wire be kept to support it by magnetic repulsion?

HARD
12th ICSE
IMPORTANT

Two very long, straight, parallel wires A and B carry currents of 10 A and 20 A respectively and are at a distance 20 cm apart. If a third wire C (length 15 cm) having a current of 10 A is placed between them, how much force will act on C? The direction of current in all the three wires is same.

MEDIUM
12th ICSE
IMPORTANT

A cyclotron accelerating protons has dees of 0.4 m radius and a radio-frequency supply of 12 megacycles/ second at 2000 volt maximum value. Calculate the magnitude of the required magnetic field, the energy and velocity acquired by the protons. Take proton mass 1.67 x 1027 kg.