Question

1)

The electric potential in a region of space has the form V(x)=ye -2x where y is a constant. Calculate the electric field. -ve

2)

For a constant charge, what happens to the capacitance if the potential is increased?

a

Increased

b

Decreased

c

No change

3)

A resistor with resistance R is connected in series with a resistor of resistance R/2. Is the equivalent resistance of the series combination, Rs, less than, greater than, or equal to R?

a

Rs<R

b

Rs>R

c

Rs=R

4)

An RC circuit contains a 16Fcapacitor and a 2Ω resistor. What is the time constant of the circuit?

a

1/8 s

b

2 s

c

8 s

d

16 s

e

32 s

0 0
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Answer #1

V(x) = ye** -2x E -2 Y dv du Y du (e^ -22 Elu) -2702 c= 28 cath at O is Constant v if V increases, c decreases (3 R.R/2 Roq C

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