Electric Circuits Answers

A galvanometer with a resistance of 15.0Ω gives a full-scale reading for current of 3.0 A. What shunt resistance is needed to convert this into an ammeter with a 30.0 A full-scale reading?

Three resistors with values of 60.0Ω, 30.0Ω, 20.0Ω, respectively, are connected in series to a 110.0 V battery of negligible internal resistance. Draw a circuit diagram and find the (a) equivalent resistance of the combined resistors, (b) current flowing through each resistor,

(c) voltage drop across each resistor, and (d) the power dissipated by each resistor.

What capacitance when connected in series with a 500Ω resistor will limit the current

drawn from a 48-mV 465-kHz source to 20μA?

A series circuit consisting of a variable resistor in series with a capacitance of 80uF is connected across a 120V, 50hz supply. To what value should the resistor R be adjusted so that the power absorbed by the series circuit will be 100W

Calculate the power delivered to each of the resistors shown in Figure below.

An L-R-C series circuit is constructed using 175 resistor, a 12.5 capacitor, and 8.00-mH inductor, all connected across an ac source having a variable frequency and voltage amplitude of 25.0 V.

At what angular frequency will the impedance be smallest, and what is the amplitude at this frequency?

At the angular frequency in part (a), what is the maximum current through the inductor?

At the angular frequency in part (a), find the potential difference across the ac source, the resistor, the capacitor, and the inductor at the instant that the current is equal to one-half inductor it greatest positive value

In part (c), how are the potential difference across the resistor, inductor and capacitor related to the potential difference across the source.

Calculate the power delivered to each of the resistors shown in Figure below.

An L-R-C series circuit is constructed using 175 resistor, a 12.5 capacitor, and 8.00-mH inductor, all connected across an ac source having a variable frequency and voltage amplitude of 25.0 V.

At what angular frequency will the impedance be smallest, and what is the amplitude at this frequency?

At the angular frequency in part (a), what is the maximum current through the inductor?

At the angular frequency in part (a), find the potential difference across the ac source, the resistor, the capacitor, and the inductor at the instant that the current is equal to one-half inductor it greatest positive value

In part (c), how are the potential difference across the resistor, inductor and capacitor related to the potential difference across the source.

How much ice at -20°c must be dropped on 0.5 kilograms of water initially at 20°c in oder for the final temperature to be 0°c with the ice all melted. Heat capacity of container can be neglected

1. What is the magnitude of the electric field at a field point 2 m from a point charge q₀ = 4 nC?  

2.  Determine the electric field of a –60-nC charge that is experiencing an electric force of 2.75 x 10^–4 N.   

3. Suppose two point charges, q₁ = + 43 nC and q₂ = –17 nC, are separated by a distance of 6 cm. Determine the:

(a) electric force interacting between the two charges; and

(b) electric field of each charge.

4. Determine the electric field strength and potential in air at a distance of 3 cm from a charge of 5 X 10^-8 C.

1. What is the magnitude of the electric field at a field point 2 m from a point charge q₀ = 4 nC?  
2. Determine the electric field of a –60-nC charge that is experiencing an electric force of

2.75 x 10^-4 N.

1. Suppose two point charges, q₁ = + 43 nC and q₂ = –17 nC, are separated by a distance of 6 cm. Determine the:

(a) electric force interacting between the two charges; and

(b) electric field of each charge.

1. Determine the electric field strength and potential in air at a distance of 3 cm from a charge of 5 X 10^-8 C

Perform the following operations

A. Write the 2's compliment of the following number: 10111110

B. Write the 8's compliment of the following number: 763 (1)

C. Write the 7's compliment of the following number: 476 (1)

D. Write the 15's compliment of the following number: FDB96

E. Write the 10's compliment of the following number: 96099