Name: Electric Circuit as a Closed Path
Uploaded: 2019-07-19
Duration: 4 min 55 s
Description: Electric current flows from the positive terminal of the cell to the negative terminal in an electric circuit. See how a broken circuit can stop your torch f...

Question

Complete the crossword puzzle given below.

Across
1. A _____ circuit is required for the flow of current.
2. A safety device used in electric circuits.
3. This is a temporary magnet.
5. Material that lets electric current to pass through it.
7. Unit of electric current.
8. Electric bell works on the _____ effect of current
Down
1. A source of electric current.
4. Heating element of electric iron is made up of this alloy.
6. Device used to measure electric current

Accepted Answer

Across

1. The current flows through the circuit only when it is closed. If there are any breaks in the circuit, then the circuit is said to be an open circuit.

2. A fuse is a safety device made up of a material with a low melting point. It is used to protect the electric circuit and devices in the circuit from the excess current passing through them.

3. An electromagnet is a device that acts as a magnet when a current flows through its coil. It is a temporary magnet that loses its magnetic properties when the current through the circuit is withdrawn.

5. A material that lets the electric current to pass through it is called a conductor.

7. The flow of charges through a circuit is called electric current. The Sl unit of electric current is ampere, and it is denoted by A.

8. Electric bell works on the magnetic effect of the current. It works by means of an electromagnet.

Down

1. A cell is a source of current. It has a positive and negative terminal. When two or more cells are connected in such a way that the positive terminal of one cell touches the negative terminal of the other, it forms a battery.

4. The heating element is made up of a metal alloy called nichrome which is composed of an alloy with $80 %$ nickel and $20 %$ chromium. Nichrome wires have high resistance to electric current and can withstand high temperatures.

6. An ammeter is a device used to measure the current and voltmeter is the device used to measure the voltage.

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