The heat developed per m3 per second (W) in a conductor having a conductivity ?

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Question
The heat developed per m³ per second (W) in a conductor having a conductivity ? and a field E is
Options
A. W = ?E²
B. W = ?E
C. W =
D. W = (?E)^0.5

Correct Answer

W = ?E²

More questions

1. Match the following:

	List I (Digital circuit)		List II (Circuit type)
A.	BCD to 7 segment decoder	1.	sequential circuit
B.	4-to-1 MUX	2.	combinational circuit
C.	4 bit shift register	3.	neither sequential nor combinational circuit

Options
A. A-2, B-1, C-2, D-1
B. A-3, B-2, C-1, D-3
C. A-2, B-2, C-1, D-1
D. A-3, B-1, C-2, D-3

2. Match the following:

	List I		List II
A.	PMMC	1.	Square law type scale
B.	Moving iron	2.	Very good response
C.	Thermo-couple	3.	Linear scale
D.	Electrostatic	4.	Voltmeter

Options
A. A-4, B-1, C-2, D-3
B. A-3, B-2, C-1, D-4
C. A-4, B-2, C-1, D-3
D. A-3, B-1, C-2, D-4

3. Assertion (A): A high dv/dt may cause triggering of a thyristor.
Reason (R): A high dv/dt results in charging current in the thyristor.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

5. Assertion (A): In some materials, ?_r is independent of temperature while in others, ?_r depends on temperature.
Reason (R): If permanent dipoles are absent, ?_r varies with temperature.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

6. Assertion (A): CO₂ has no resultant dipole moment but CO has a dipole moment.
Reason (R): The structure of CO₂ is O = C = O.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

7. Assertion (A): In Figure, the intercept of the line on y-axis is equal to N (a_e + a_i), where N is number of atoms/m³, a_e is electronic polarizability and a_i is ionic polarizability.
Reason (R): a_e and a_i are independent of temperature.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

8. Assertion (A): The circuit of figure thyristor will conduct for 180� during positive half cycle if it is continuously fired.

Reason (R): A thyristor can conduct only when it is forward biased.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

9. Assertion (A): In ionic dielectrics, P = P_e + P_i.
Reason (R): In ionic crystals, permanent electric dipole moment is zero.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

10. Assertion (A): The condition of minimum distortion in a transmission line is L = RC/G.
Reason (R): Line loading means addition of inductance to satisfy the condition L = RC/G.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

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