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प्रश्न
What current will be taken by a 920 W appliance if the supply voltage is 230 V?
उत्तर
Given:
P = 920 W
V = 230 V
We know that power is given by P = VI, where I is the current consumed by the device.
Using the given values of P and V, we get:
920 = 230 I
I = `920/230=4A`
Thus, the current consumed by the appliance is 4 A.
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संबंधित प्रश्न
The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are as given below:
| V (volts) | 0.5 | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 |
| I (amperes) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.8 | 1.0 |
Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor.
Define the unit of resistance (or Define the unit "ohm").
Keeping the potential difference constant, the resistance of a circuit is doubled. The current will become:
In the circuit shown below:
The potential difference across the 3 Ω resistor is:
If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase?
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 6 V battery in series with 1 Ω and 2 Ω resistors.
State whether the potential is a scalar or vector?
Exercise.
Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5 A.
A negative charge will move from ______ to ______ potential.
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.
