Circuit A has a voltage of 10 V, and circuit B has a voltage of 15 V. Which statement about the circuits is correct?(1 point)
Responses
If the current in circuit A equals the current in circuit B, then the resistance in circuit A equals the resistance in circuit B.
If the current in circuit A equals the current in circuit B, then the resistance in circuit A equals the resistance in circuit B.
If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
How does adding a resistor to an electric circuit affect the current?(1 point)
Responses
The resistor increases the current by transforming light energy or heat into electrical energy.
The resistor increases the current by transforming light energy or heat into electrical energy.
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor increases the current by increasing the amount of electric charge.
The resistor increases the current by increasing the amount of electric charge.
The resistor decreases the current by decreasing the amount of electric charge.
The resistor decreases the current by decreasing the amount of electric charge.
Which energy transformation happens when a toaster is plugged in to an outlet in the wall and used to make toast?(1 point)
Responses
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Solar cells are used to power a person’s house. Which statement about the process is correct?(1 point)
Responses
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
Energy from the sun will equal the energy needs of the house because energy is not created or destroyed.
Energy from the sun will equal the energy needs of the house because energy is not created or destroyed.
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.