Electric Circuits Answers

Find the current through each battery. 18 Ω 9 V- 3Ω 3 V I3=

What happens if the filament of a single bulb fails (or if the bulb is removed from its socket)? Why?

How does an electromotive force differ from a potential difference?

You have five 10.0 F capacitors. Show all possible connections of all five capacitors to produce an equivalent capacitance of .5 F

Determine the value of the resistance of the following

resistors with color combinations below. Express your answers in Ohms (Ω), kiloohms

(𝑘Ω) or megaohms (𝑀Ω):

1. Yellow-White-Orange-Gold

2. Brown-Blue-Green-Silver

3. Green-Violet-Black-Brown

4. Green-White-Grey-Yellow-Red

5. Grey-Red-Blue-Red-Silver-Red

A particle with mass 1.81 x 10-3 kg and a charge of 1.22 x 10-8 C has, at a given instant, a velocity 𝑣𝑣⃑ = (3.00 × 104 𝑚𝑚 𝑠𝑠 )𝚥𝚥̂. What are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field 𝐵𝐵�⃑ = (1.63 𝑇𝑇)𝚤𝚤̂+ (0.980 𝑇𝑇)𝚥𝚥̂̂?

Objective: Distinguish between electromotive forces and potential differences.

Material: A circuit Diagram

Procedure:

1. Draw a circuit diagram with two batteries, 1 light bulb, and switch. You can apply your creativity provided that the appropriate symbols are used.
2. Label the electromotive force and the potential difference.

Question: How does an electromotive force differ from potential difference?

The current drawn from the cell when the wire is connected across A as shown is 0.3A but reduced to 0.25A, when the wire is removed leaving

A. Alone connected to the the cell determine

B. The E.M.F of the cell

C. The internal resistance of the cell

Three resistors with values of 60.0Ω, 30.0 Ω, and 20.0 Ω, respectively, are

connected in series to a 110.0 V battery of negligible internal resistance. (a) Draw a circuit diagram and find the (b) equivalent resistance of the combined resistors, (c) current flowing through each resistor, (d) voltage drop across each resistor.

Four resistors when connected in series give an equivalent

resistance if 75.0 Ω. Three of the resistors have values 18.0 Ω, 6.0 Ω, and

24.0 Ω, respectively. What is the resistance of the fourth resistor?