The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

3 / 4 Ω.

4 / 3 Ω.

3 / 2 Ω.

6 Ω.

3 / 4 Ω.

4 / 3 Ω.

3 / 2 Ω.

6 Ω.

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Electric Circuits
A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

1 W.

24.5 W.

11 W.

21 W.

1 W.

24.5 W.

11 W.

21 W.

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

105.

15.

60.

75.

105.

15.

60.

75.

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Electric Circuits
Which of following materials has the least resistivity ?

Zinc.

Copper.

Mercury.

Lead.

Zinc.

Copper.

Mercury.

Lead.

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Electric Circuits
Electro-chemical equivalent is usually expressed in

mg per kW.

mg per volt.

mg per coulomb.

mg per kVA.

mg per kW.

mg per volt.

mg per coulomb.

mg per kVA.

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Electric Circuits
The current through the 2 KΩ resistance ( rest resitances are all 1 ohm each ) in the circuit shown in diagram

0 mA.

1 mA.

2 mA.

6 mA.

0 mA.

1 mA.

2 mA.

6 mA.

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Electric Circuits

Electric Circuits The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

Electric Circuits 2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

Electric Circuits Which of following materials has the least resistivity ?

Electric Circuits Electro-chemical equivalent is usually expressed in

Electric Circuits The current through the 2 KΩ resistance ( rest resitances are all 1 ohm each ) in the circuit shown in diagram

Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits
A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

Electric Circuits
Which of following materials has the least resistivity ?

Electric Circuits
Electro-chemical equivalent is usually expressed in

Electric Circuits
The current through the 2 KΩ resistance ( rest resitances are all 1 ohm each ) in the circuit shown in diagram