Advertisements
Advertisements
प्रश्न
Find the resistance of a conductor if the electric current flowing through it is 0.35 A when the potential difference across it is 1.4 V.
उत्तर
Given :
Potential Difference (V) = 1.4 V
Current (I) = 0.35 A
Now,
V = IR
so, R =`"V"/"I"= 1.4/0.35 = 4 "ohm"`
APPEARS IN
संबंधित प्रश्न
Name a device that help to measure the potential difference across a conductor.
A p.d. of 10 V is needed to make a current of 0.02 A flow through a wire. Wire p.d. is needed to make a current of 250 mA flow through the same wire?
If the potential difference between the ends of a fixed resistor is halved, the electric power will become:
Write an expression for the electrical power spent in flow of current through a conductor in terms of current and resistance.
Draw a graph of Potential difference (V) versus Current (I) for an ohmic resistor. How can you find the resistance of the resistor from this graph?
A current of 0.2 A flows through a conducting wire for 5 minutes. How much charge will flow?
A current of 100 mA. flows through a wire. The charge on an electron is 1.6 × 10-19 C. Find the number of electrons passing per second through the cross-section of the conductor.
Define electric potential and potential difference.
Name a device that helps to maintain a potential difference across conductors.
Twenty-seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.