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A resistor is connected in series with a battery. If an identical resistor is inserted into the circuit so that the two resistors and the battery are all in series, assuming that the battery itself has a resistance of zero, the power dissipated in the circuit will now be: (select one) a. four times the previous value b.twice the previous value c.half the previous value d.a quarter of the previous value e.unchanged
A PV panel that produces a power of 60W when directly facing the Sun is now tilted 30 degrees away from this angle. The power output is now approximately:
select one:a.35w b.30w c.69w d.120w e.52w
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The drawing shows a square, each side of which has a length of L = 0.25 m. On two corners of the square are fixed different positive charges, q1 and q2. Find the electric potential energy of a third charge q3= -6.0 x 10 -9 C placed at corner A and then at corner B.
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Three point charges are placed at the vertices of an equilateral triangle as shown. Calculate the electric field intensity at the centre.
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