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soldi70 [24.7K]
3 years ago
9

A resistance of 1kΩ has a current of 0.25A throughout it when it is connected to the terminal of a battery. What is the potentia

l difference across the ends of a resistor?
Physics
1 answer:
pickupchik [31]3 years ago
6 0

Answer:

The potential difference across the resistor is 250 volts.

Explanation:

The potential difference V across the ends of the resistor is given by

V = IR

where I is the current through the resistor and R is is its resistance.

Now, in our case

R = 1.0*10^3\Omega,

I = 0.25 A;

therefore, the potential across is

V = 0.25A (1.0*10^3\Omega)

\boxed{V = 250volts.}

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First, we calculate the work done by this force after the box traveled 14 m, which is given by:

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Since we have a frictionless surface, according to the the work–energy principle, the work done by all forces acting on a particle equals the change in the kinetic energy of the particle, that is:

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v_f=\sqrt{\frac{2W}{m}}\\v_f=\sqrt{\frac{2(200N\cdot m)}{6kg}}\\v_f=\sqrt{66.67\frac{m^2}{s^2}}\\v_f=8.17\frac{m}{s}

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