A vector can be multiplied by a number. The number may be
A. Dimensionless
B. Dimensional scalar
C. Negative
D. All A, B and C are correct
A vector can be multiplied by a number. The number may be Read More »
Physics
The direction of a vector in space is specified by
A. One angle
B. Two angle
C. Three angle
D. No angle
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Addition of vector obeys
A. Commutative law
B. Distributive law
C. Associative law
D. All given laws in A, B and C
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An inductor may store energy in
A. Its electric field
B. Its coils
C. Its magnetic field
D. Both electric and magnetic fields
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Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in
A. Each increase
B. Each decrease
C. Each remains the same
D. One increases whereas that in the other decreases
A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by
A. V√/√2R
B. V/√2√R
C. V02/√2R
D. 2/√2√R
Choose the correct statement. In the case of AC circuit ohms law holds for
A. Peak values of voltage and current
B. Effective values of voltage and current
C. Instantaneous values of voltage and current
D. All of the above
Choose the correct statement. In the case of AC circuit ohms law holds for Read More »