Find the current through a resistance 2 ohm if the voltage across the resistance is 6 V.

Step 1: Given: Resistance = 2\(\Omega\)

Voltage = 6 V

To find: Current, I =? 

Step 2: Calculating current

From Ohm’s law, we know that,

V = IR

I = V/R

I = 6/2

I = 3 A
 
Therefore the value of the current through the resistance is 3 A.


Related Questions

  1. Define: 1 volt, Potential difference
  2. A small bulb has a resistance of 2 ohms when it is cold. It draws 0.4-ampere current from a source of 4V and then starts glowing. Calculate the resistance when it is glowing
  3. What is the necessary condition for a conductor to obey Ohm's Law?
  4. What Is Effective Resistance?
  5. Obtain the equation J = σE of Ohm's law on the basis of drift velocity
  6. Why is the curve representing Ohm's law linear?
  7. State Ohms law. How can it be verified experimentally?
  8. State And Explain Joules Law Of Heating.
  9. Draw a circuit diagram to verify ohm’s law.
  10. State Ohms Law. Express It Mathematically. Define Si Unit Of Resistance.
  11. What Is The Basic Principle Of Ohm's Law?
  12. Obtain the equation of Ohm's law on the basis of drift velocity
  13. Is resistance constant in Ohm's law?
  14. What are the applications of ohm's law used in daily life?
  15. Why Do We Use Ohm's Law?

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CBSE CLASS XII Related Questions

  • 1.
    Photoemission of electrons occurs from a metal (\( \phi_0 = 1.96 \, \text{eV} \)) when light of frequency \( 6.4 \times 10^{14} \, \text{Hz} \) is incident on it. Calculate: Energy of a photon in the incident light, The maximum kinetic energy of the emitted electrons, and The stopping potential.


      • 2.
        Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

          • attract with a force \( \frac{F}{2} \)
          • repel with a force \( \frac{F}{2} \)
          • repel with a force \( F \)
          • attract with a force \( F \)

        • 3.
          Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in

            • (i) and (iii) only
            • (iii) and (iv) only
            • (i), (iii) and (iv) only
            • All of them

          • 4.
            Assertion (A) : The mass of a nucleus is less than the sum of the masses of the constituent nucleons. Reason (R) : Energy is absorbed when the nucleons are bound together to form a nucleus.

              • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
              • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
              • Assertion (A) is true, but Reason (R) is false.
              • Both Assertion (A) and Reason (R) are false.

            • 5.
              Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.

                • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
                • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
                • Assertion (A) is true, but Reason (R) is false.
                • Both Assertion (A) and Reason (R) are false.

              • 6.
                The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

                  • \( \frac{q}{4 \pi \epsilon_0 l^2} \) pointing along MA
                  • \( \frac{q}{\pi \epsilon_0 l^2} \) pointing along AM
                  • \( \frac{q}{2 \pi \epsilon_0 l^2} \) pointing along AM
                  • Zero
                CBSE CLASS XII Previous Year Papers

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