high?school physics?assignment on electricity (Coulomb,ohms law)

Name: _______________________________
Assignment #4: Electricity
1. Fill in the table below with the name of each symbol and the unit of
measurement. Follow the example in the first row. [4 marks] Symbol
2. What is
on current
circuit of
resistance
voltage is

Name

Unit

V

Voltage, Potential
Difference

Volt

I
q1 or q2

the effect
through a
when the
doubled?


R
F
3. What is
on current if both voltage and resistance are doubled? 

the effect

4. Which type of circuit is best for operating several electrical devices, each
independently of the other, series or parallel? Defend your answer. [2 marks]

IST200 Assignment #8 Electricity

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5. Given the circuit diagram below, answer the following questions. Show all your
work. [5 marks]

a) What is the potential difference across the 5 resistor?
b) What is the current through the 8 resistor?
c) What is the total resistance in the circuit?

6. Given the circuit diagram below, answer the following questions. [3 marks] a) What is the total resistance of the circuit?
b) How much current flows through the 20 resistor?
c) What is the drop in potential difference across the 15
resistor?

IST200 Assignment #8 Electricity

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7. A series circuit has 3 resistors connected to a 45.0 V potential difference. The
resistors have resistances of 5.0 , 8.0 and 12.0 . [6 marks] a) Draw a picture of the circuit.
b) What is the total resistance of the circuit?
c) What is the current flowing through the 8.0 resistor?
d) What is the drop in potential difference through the 5.0 resistor?
e) If another 5.0 resistor was connected in series, describe what would
happen to the circuit?s:
i.
total resistance
ii.
total current

IST200 Assignment #8 Electricity

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Coulomb?s Law
8. What happens to the force between two charges if the distance between them is
tripled? 

9. What happens to the force between two charges if the magnitude of one charge
is doubled? 

10.What happens to the force between two charges is the magnitude of both
charges is doubled? 

11.What happens to the force between two charges if the magnitude of both
charges is tripled and the distance between them is cut in half? [2 marks]

12.A 0.001 coulomb charge and a 0.002 coulomb charge are 2 meters apart.
Calculate the force between them. (k=9.0 ? 10 9 )
[2 marks]

13.The force between two charges is 1000 N. One has a charge of 2 ? 10-5 C, and
the other has a charge of 5 ? 10-6 C. What is the distance between them? (k=9.0
? 109 )
[3 marks]

IST200 Assignment #8 Electricity

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