Series Circuit Math

In a series circuit which of the following is the same  throughout the circuit

• Resistance
• Voltage
• Current
• None of the above

In a series circuit which of the following will vary based on the resistor

• Resistance
• Voltage
• Current
• None of the above

A circuit with 3 resistors, 10 Ohms, 30 Ohms and 20 Ohms are in series. What is the total resistance

• 30 Ohms
• 50 Ohms
• 60 Ohms
• 100 Ohms

3 resistors are connected to a 9 V battery n a series circuit, the first resistor uses 6 V, the second uses 2 V. How much voltage does the third resistor use?

• 1 V
• 2 V
• 3 V
• 9 V

As the number of resistors increase, the total resistance ___________ and the total current ____________

• Increase, decrease
• Decrease, increase
• Increase, increase
• Decrease, decrease

If you increase the voltage of a circuit, what happens?

• Current decreases
• Current increases
• Electrons disappear
• Bulbs get dimmer

This type of circuit only has one path for current to flow. 

• series
• parallel
• combination
• split

Total resistance in a series circuit

• R_{t =} R₁ + R₂ + R₃ ...
• 1/R_{t =} 1/R₁ + 1/R_{2 ...}
• R_t = R₁ X R₂ / R₁ + R_{2 ...}
• R_t = R_N / R_V 

If you decrease the resistance of a circuit, what happens?

• Current decreases
• Current increases
• Electrons disappear
• Bulbs get dimmer

The total resistance in this circuit is 

• 100 ohms
• 450 ohms
• 400 ohms
• 30 ohms

Tags

CCSS.7.NS.A.1D