If a potential difference of 10V causes a current of 2A to flow for 1 minute, how much energy is transferred?
Download our app for free and get startedPlay store
Given: p.d. = 10V, I = 2amp, t = 1 min = 60s.
We know that:
$\text{I} = \frac{\text{Q}}{\text{T}}$
Thus, Q = I × t.
Q = × 60.
Q = 120C.
Work done = p.d. × charge moved
Work done = 120 × 10J
Work done = 1200J.
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A wire is 1.0m long, 0.2mm in diameter and has a resistance of $10Ω.$ Calculate the resistivity of its material?
    View Solution
  • 2
    In the circuit diagram given below, the current flowing across 5 ohm resistor is 1 amp. Find the current flowing through the other two resistors.
    View Solution
  • 3
    Three 2V cells are connected in series and used as a battery in a circuit.
    1. What is the p.d. at the terminals of the battery?
    2. How many joules of electrical energy does 1C gain on passing through
    1. One cell.
    2. All three cells?
    View Solution
  • 4
    A p.d. of 10V is needed to make a current of 0.02A flow through a wire. What p.d. is needed to make a current of 250mA flow through the same wire?
    View Solution
  • 5
    Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is this relation known?
    View Solution
  • 6
    Distinguish between resistance and resistivity.
    View Solution
  • 7
    Consider the circuit given below where A, B and C are three identical light bulbs of constant resistance.
    1. List the bulbs in order of increasing brightness.
    2. If C burns out, what will be the brightness of A now compared with before?
    3. If B burns out instead, what will be the brightness of A and C compared with before?
    View Solution
  • 8
    In the circuit shown below, the voltmeter reads $10V.$
    1. What is the combined resistance?
    2. What current flows?
    3. What is the p.d. across $ 2 Ω$ resistor?
    4. What is the p.d. across $3 Ω$ resistor?
    View Solution
  • 9
    Calculate the area of cross-section of a wire if its length is 1.0m, its resistance is $23 Ω$ and the resistivity of the material of the wire is $1.84\times10 Ω\ \text{m}.$
    View Solution
  • 10
    What would be the effect on the resistance of a metal wire of:
    1. Increasing its length?
    2. Increasing its diameter?
    3. Increasing its temperature?
    View Solution