Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
A/c to Ohm's law,
R = `"V"/"I" = 20/2` = 10 Ω
APPEARS IN
संबंधित प्रश्न
Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).
Name the material which is the best conductor of electricity.
How does the resistance of a wire change when:
its diameter is tripled?
You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?
What is the equivalent resistance between A and B in the given circuit (Fig?)
Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :
- the effective resistance of the circuit.
- the reading of ammeter.
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
State a relation between electrical power, resistance and potential difference in an electrical circuit.
In an electrical circuit, two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be ______.
