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A resistor develops 400J of thermal ener...

A resistor develops 400J of thermal energy in 10 s when a current of 2A is pased through it. (a) Find its resistance . (b) If the current is increased to 4 A, what will be the energy developed in 10 s.

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The correct Answer is:
(a) `10 Omega.`
(b) 3200 J
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RESONANCE ENGLISH-CURRENT ELECTRICITY-Exercise-1 (Part-1)
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  3. A resistor develops 400J of thermal energy in 10 s when a current of 2...

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  4. Find the current in 10Omega resistcance, V(1) and source voltage V(s) ...

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  5. Two electric bulbs, each designed to operate with a power of 500W in 2...

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  7. All resistances in fig. 5.34 are in ohm. Find the effective resistance...

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  8. In the given circuit determine (a) Equivalent resistance (Including...

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  9. In given circuit determine (a) Equivalent resistance (Including int...

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  10. Determine the potential difference between X and Y in the circuit show...

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  11. Find the equivalent resistance of the circuit given in figure between ...

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  12. An infinite ladder is constructed with 1(Omega)and 2(Omega)resistor as...

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  13. As shown in figure a variable rheostat of 2kOmega is used to control t...

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  14. ABCD is a square where each side is a uniform wire of resistance 1Omeg...

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  15. Suppose you have three resistor of (20 Omega),(50 Omega)and (100 Omega...

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  16. Three bulbs,each having a resistance of 180(Omega)are connected in par...

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  17. Consider the circuit shown in figure.Find the current through the10(Om...

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  19. In the figure each cell has an emf of 1.5 V and internal resistnce of ...

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  20. In the circuit shown all live resistors have the same value 200 ohms a...

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