Answers to AQA GCSE Series Circuit Calculations (Combined science)
Practice Questions
1.Calculate the resistance of the bulb in the circuit below
V = IR
I = V/R
I = 6/4 = 1.5A
2. Calculate the current flowing through the circuit below with the two resistors.
In a series circuit, total resistance is the sum of the individual resistors.
Total resistance = 4 ohms + 4 ohms = 8 Ohms
V = IR
I = V/R
I = 12/8 = 1.5A
3. In the circuit below, calculate V1 and R1
Potential difference is shared between the components in a series circuit.
25V = 10V + V1
So, V1 = 25-10 = 15V, so V1 = 15V.
Next calculate the current that flows through the 1500ohm resistor
V = IR, so I = V/R
I = 15/1500 = 0.01A
In a series circuit, current is the same at all points in a circuit.
We can now calculate the value of resistor, R1
V =IR
R = V/I, R = 10V/0.01A = 1000 ohms
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans