Question
Describe different ways to induce current in a coil of wire.

Answer

Different ways to induce current in a coil of wire are:
  1. By moving the coil relative to a fixed magnet.
  2. By keeping the coil fixed and moving a magnet relative to it.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The figure below shows a variable resistor in a dimmer switch.

How would you turn the switch to make the lights: (a) brighter, and(b) dimmer? Explain your answer
Write down what you understand from the following chemical reaction:
$
AgNO _{3( aq )}+ NaCl _{( aq )} \rightarrow AgCl \downarrow+ NaNO _{3( aq )}
$
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
  1. Name the substance X.
  2. How does substance X make the detection of leakage of LPG easy?
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
what is meant by valency of element?
What is an oxidation reaction? Identify in the following reaction:
  1. The substance oxidised, and
  2. The substance reduced.
$\text{ZnO}\ +\ \text{C}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{Zn}\ +\ \text{CO}$
Study the following procedure and answer the questions below: (Practice Activity Sheet – 2)
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note the depth that each sphere goes into the wax.
(i) Which property of a substance can be studied with this procedure?
(ii) Describe that property in minimum words.
(iii) Explain the rule of heat exchange with this property.
You have been provided with three test-tubes. One of these test-tubes contains distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?
Solar cells are used to provide the electric current to charge the batteries of a car driven by an electric motor. Describe the energy changes which take place.
A communications satellite in orbit sends a parallel beam of signals down to earth. If these signals obey the same laws of reflection as light and are to be focussed onto a small receiving aerial, what should be the best shape of the metal 'dish' used to collect them?