Physics- Electricity

What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 ⁰ C?

• 30 A

• .3 A

• .5 A

• 5 A

A wire of length /, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to,

(a)  

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is

• 2 × 10 ⁵ Joule

• 2 × 10 ³ Joule

• 2 x 10 ⁴ Joule

• 2 x 10² Joule

Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

• Current

• Voltage

• Resistance

• Resistivity

What is a closed path for electrons to flow through?

• static electricity
• circuit
• amperes

Identify the conductor below.

• cloth rag
• plastic bottle
• gold ring

Tags

NGSS.HS-PS2-5

Thicker wires have _______ resistance than thinner wires.

• more
• less
• the same

As the resistance in a circuit increases, the electric current __________.

• increases
• decreases
• stays the same

Which device or devices could be removed without breaking the electric circuit?

• Only the bulb

• Only the switch

• The battery and the switch

• The bulb and the switch

The shock you sometimes feel when you touch a metal doorknob on a dry day is electric ________.

• Circuit

• Current

• Discharge

• Resistance

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5