E$-6$ CAPACITORS IN CIRCUITS

How will the time to charge the capacitor be effected if the capacitance is increased in an RC circuit?

a$.$ increase

b$.$ decrease

c$.$ remain unchanged

How will the time to discharge the capacitor be effected if the capacitance is increased in an RC circuit?

a$.$ Increase

b$.$ decrease

c$.$ remain unchanged

In a circuit, a battery of $12$ V $,$ a resistor of $100$ and a capacitor of $20F$ are connected in series. What will be the time constant of this circuit?

a$.2\mathrm{.}0{10}^{3}s$

b$.2\mathrm{.}0$ s

c$.2\mathrm{.}0{10}^{-3}s$

d$.24\mathrm{.}0{10}^{-3}s$

Calculate the equivalent capacitance of the following circuit:

a$.15F$

b$.0\mathrm{.}278F$

c$.3\mathrm{.}33F$

d$.3\mathrm{.}6F$

E$-7$ RESISTORS$-$CURRENTS$-$VOLTAGES IN CIRCUITS

What is the resultant resistance when $R1=150,R2=300$ and $R3=40$ are connected in series

a$.490$

b$.490$

c$.28\mathrm{.}6$

d$.14\mathrm{.}3$

What is the resultant resistance when $R1=150,R2=300$ and $R3=40$ are connected in parallel

a$.490$

b$.28\mathrm{.}6$

c$.28\mathrm{.}6$

d$.14\mathrm{.}3$I