A charge is moved from a point A to point B. The work done to move an unit charge during this process is called ……………………
A) potential at A
B) potential at B
C) potential difference between A and B
D) current from A to B
1 Answers
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Two particles move in a uniform gravitational field with an acceleration g. At the intial moment the particles were located at one point and moved wit
Correct Answer - 0.2 sec
2 Answers 1 views
‘Service’ refers A) Nature of work done B) Amount of work done C) Cost of work done D) No livelihood earned
A) Nature of work done
2 Answers 3 views
If work done in stretching a wire by 1 mm is 2 J, the work necessary for stretching another wire of same material, but with double the radius and half
Correct option is: (D) 16
2 Answers 1 views
If 100 joules of work must be done to move electric charge equal to 4 C from a place, where potential is -10 volt to another place
Given: q0 = 4 C, VA = -10 volt, VB = V volt, WAB = 100 J To Find: Potential (V) Formula: VB – VA = \(\frac{W_{AB}}{q_0}\) Calculation: From formula, V – (-10) = \(\frac{100}{4}\) = 25 ∴ V + 10 = 25 ∴ V = 15...
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Find the work done when a point charge of 2.0 pc is moved from a point at a potential of -10 V to a point at which the potential is zero.
VA = -10V, VB = 0, q = 2 × 10-6 C To Find: Work done (W) Formula: VBA = \(\frac{W}{q}\) Calculation: From formula, W = VBA × q = (VB – VA) × q = (0 + 10) × 2 × 10-6 = 20 ×...
2 Answers 1 views
If a charge is moved against the Coulomb force of an electric field, (A) work is done by the electric field
(B) energy is used from some outside source
2 Answers 1 views
If work has positive value, the body on which the work has been done would energy.
Correct option is A) gain
2 Answers 1 views
If work has negative value, the body on which the work has been done would ………………. energy.
Correct option is B) lose
2 Answers 1 views
Work is said to be done in the following case A) Rangaiah is pushing a huge rock but he fail to move it
B) Seetha is pulling a toy car
2 Answers 1 views
Push a heavy box with a small force. It does not move. Now gradually increase the force, the box till does not move.
A) force increases, friction increases
2 Answers 2 views