Advertisements
Advertisements
प्रश्न
'The resistance of a wire is 2 ohm'. Explain the meaning of this statement.
Advertisements
उत्तर
The resistance of the wire is 2 ohms if a current of 1 ampere flows through it when the potential difference across it is 2 volt.
APPEARS IN
संबंधित प्रश्न
How much is the charge on an electron?
What is the function of a key (or switch) in an electric circuit?
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
Explain why does a metal wire when connected to a cell offer resistance to the flow of current.
On increasing the resistance in a circuit, the current in it :
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at lower potential before electrical contact on the basis of convention?
State the kind of charge on a negative ion.
