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प्रश्न
State whether the potential is a scalar or vector?
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उत्तर
Potential is also a scalar quantity.
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संबंधित प्रश्न
What is the potential difference between the terminals of a battery if 250 joules of work is required to transfer 20 coulombs of charge from one terminal of battery to the other?
Name a device which helps to maintain potential difference across a conductor (say, a bulb).
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when: a current of 2 A flows through it for 10 s?
The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:
| Potential differences, V (in volts) | : | 2.5 | 5.0 | 10.0 | 15.0 | 20.0 | 25.0 |
| Current, I (in amperes) | : | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
What current will be taken by a 920 W appliance if the supply voltage is 230 V?
A current of 1.6 mA flows through a conductor. If charge on an electron is –1.6 × 10-19 coulomb, find the number of electrons that will pass each second through the cross section of that conductor.
The following table shows current in Amperes and potential difference in Volts.
Which law will the graph prove? Explain the law.
Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential differences of the battery will be ____________ V.
Electric cells having 2V potential difference each have been connected in the form of a battery. What will be the total potential difference of the battery in both cases?
Assertion (A): Charges flow from higher potential to lower potential.
Reason (R): Current flows mainly due to the flow of electrons.
