EQUATIONS

Question 1

How is voltage calculated?

Answer 1

work / time or work / charge

Question 2

What does ‘Q’ mean in an equation?

Answer 2

charge

Question 3

Potential difference =

Answer 3

voltage

Question 4

How is power calculated?

Answer 4

work / time

Question 5

How is current calculated?

Answer 5

charge / time

Question 6

How is resistance calculated?

Answer 6

voltage / current or 1 / gradient (graph with current & voltage)

Question 7

What is the unit for charge?

Answer 7

coulombs

Question 8

When in a series circuit, what is the relationship with current?

Answer 8

I = I₁ = I₂

Question 9

When in a parallel circuit, what is the relationship with current?

Answer 9

I = I₁ + I₂

Question 10

When in a series circuit, what is the relationship with voltage?

Answer 10

V = V₁ + V₂

Question 11

When in a parallel circuit, what is the relationship with voltage?

Answer 11

V = V₁ = V₂

Question 12

What is the equation for resistance in a series circuit? When connecting components, does the resistance increase or decrease?

Answer 12

R = R₁ + R₂

increases

Question 13

What is the equation for resistance in a parallel circuit? When connecting components, does the resistance increase or decrease?

Answer 13

1/R = 1/R₁ +1/R₂

decreases

Question 14

How do you calculate the resistance of this circuit?

Answer 14

1/R𝒸= 1/(R+R) + 1/R

Question 15

How do you calculate the resistance of this circuit?

Answer 15

R𝒹 = R + (1/R + 1/R)