Electrical energy is converted to heat at the rate of___________________?
Electrical energy is converted to heat at the rate of___________________?
A. IRt
B. I2R
C. I2Rt
D. VIt
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Which one of the following physical quantities does not have the dimensions of force per unit area ?
Which one of the following physical quantities does not have the dimensions of force per unit area ?A. Stress
B. Strain
C. Youngs modulus
D. PressureThe rotational K.E of the hoop is equal to the______________?
The rotational K.E of the hoop is equal to the______________?A. its translational K.E
B. half than its translational K.E
C. double than its translational K.E
D. four times than its translational K.ECircuit which gives continuously varying potential is called _______________________?
Circuit which gives continuously varying potential is called _______________________?A. complex network
B. wheat stone bridge
C. potential divider
D. all of aboveA cyclist cycling around a circular racing track skids because_____________?
A cyclist cycling around a circular racing track skids because_____________?A. the centripetal force upon him is less than limiting friction
B. the centripetal force upon him is greater than limiting friction
C. the centripetal force upon him is equal to the limiting friction
D. the friction between the tyres of the cycle and road vanishesIn case of planets the necessary acceleration is provided by______________?
In case of planets the necessary acceleration is provided by______________?A. Gravitational force
B. Frictional force
C. Coulomb force
D. Centripetal forceRain drops fall from great height Which among the following statements is true regarding it?
Rain drops fall from great height Which among the following statements is true regarding it?A. they fall with that ultimate velocity, which are different for different droplets
B. they fall with same ultimate velocity
C. their velocity increases and they fall with different velocity on the earth
D. their velocity increases and they fall with same velocity on the earth