Advertisements
Advertisements
प्रश्न
What do you understand by the open electric circuit?
Advertisements
उत्तर
Open electric circuit: When the path of an electric circuit, starting from one terminal of the cell, is broken at some point, then such a circuit is called open electric circuit.
APPEARS IN
संबंधित प्रश्न
Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
Draw a neat diagram showing a closed electric circuit.
Explain the following:
Open circuit
What is the use of earthing wire?
Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
Match the following
| 1. | Insulator | a. | Coulomb |
| 2. | Conductor | b. | Electric circuit |
| 3. | Closed path | c. | Copper |
| 4. | Electric charge | d. | Rubber |
How is Joule's law effect useful in electric circuits where fuse is used as a safety device?
Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
