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प्रश्न
By what other name is the unit joule/coulomb called?
उत्तर
The unit joule/coulomb is called by another name, volt. Volt is the SI unit of potential difference.
Potential difference = Work done/Quantity of charge moved
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संबंधित प्रश्न
Which of the following statements correctly defines a volt?
(a) a volt is a joule per ampere.
(b) a volt is a joule per coulomb.
Which device is used to measure p.d?
Define one coulomb charge.
What is a voltmeter?
The device used for measuring potential difference is known as:
For the circuit shown in the diagram below:
What is the value of:
(i) current through 6 Ω resistor?
(ii) potential difference across 12 Ω resistor?
Explain the analogy between the flow of charge (or current) in a conductor under a potential difference with the free fall of a body under gravity.
Define the following:
Potential difference
The figure shows a circuit. When the circuit is switched on, the ammeter reads 0.5 A.
(i) Calculate the value of the unknown resistor R.
(ii) Calculate the charge passing through the 3 Ω resistor in 120 s.
(iii) Calculate the power dissipated in the 3 Ω resistor.
State Ohm’s law.
