Question

An electric current can produce
A. Heating effect only.
B. Chemical effect only.
C. Magnetic effect only.
D. Chemical, heating and magnetic effects.

Answer 1

Hint: An incandescent bulb will emit heat as well as light due to the resistance offered to the flowing current. For many chemical reactions, electrodes have been used widely, in which some chemical reactions are done as a result of charge flow through the electrodes. A moving charge or a current passing through a coil produces a magnetic field around them. These examples will lead to the answer.

Complete step-by-step answer:
An electric current can produce chemical, heating and magnetic effects. All bodies offer an amount of resistance to the flow of electric current. This resistance converts some amount of electric energy into heat energy. This is the heating effect of current. The materials which are good conductors of electric current will produce a very small amount of heating current. When the resistance to the current flow is higher, more heat is produced. In some electronic devices, the production of heat will decrease its efficiency. But there are some electronic devices like electric irons, electric water heaters etc. which make use of this heat effect.
A current flowing through a wire gives a magnetic nature to it. A solenoid in which the current is passed through it will have a magnetic field around it. Electromagnets are used for many applications in which the current is passed through a wounded wire around the body in which it behaves as a magnet while current is passed through the wire.
Electrodes are used for conducting chemical reactions in a conducting liquid, in which the current is passed through the electrodes to the solution which results in certain chemical reactions. Electrolysis of water, electroplating etc. are some of the chemical reactions done by electric current.

Note: Don’t try to answer by looking at only one option. Here all options are correct. It is better to remember instances or experiments to answer this question. We are still exploring the applications of current in various fields. Most of the fields are extensively using current for the production of light, heat, chemical energy, magnetic effects and mechanical energy.