Ch- Electric Currents and its effects, Class 7 Quiz

The positive terminal of one cell is connected to the Positive terminal of another cell. This is how a battery forms...

• False

• True

This symbol indicates that the.....

• BATTERY

• WIRE

• SWITCH IS ON

• SWITCH IS OFF

THE COIL OF WIRE PRESENT IN THE GEYSERS AND HEATER IS KNOWN AS (a)   ???

Tags

NGSS.MS-PS3-3

I am an effect that can make wires hot when current passes through them. Guess who am I ???

• Magnetic effect of the current.

• Chemical effect of the current

• Element

• heating effect of the current

Tags

NGSS.MS-PS3-3

I am a Standard mark assigned by New Delhi on products.

• IPS

• USI

• ISI

• SIP

WHICH OF THEM IS A TRUE STATEMENT ON ELECTRICAL FUSES...

• FUSES ARE MADE UP OF IRON.

• SAFETY DEVICE, PREVENT DAMAGES TO CIRCUITS AND POSSIBLE FIRES

• NOT A SAFETY DEVICE

• FUSES CAN LEAD TO FIRE.

INSULATION ON WIRES COME OFF DUE TO WEAR AND TEAR. THIS CAN LEAD TO?

• OVERLOADS

• SHORT CIRCUIT

THE NEEDLE OF A COMPASS GETS DEFLECTED WHEN CURRENT PASSES THROUGH IT. THIS IS KNOWN AS

• HEATING EFFECT OF CURRENT

• CHEMICAL EFFECT OF THE CURRENT

• MAGNETIC EFFECT OF CURRENT

Tags

NGSS.HS-PS2-5

MAGNETIC EFFECT OF CURRENT WAS WONDERED BY WHICH SCIENTIST?

• HANS MAXIM OERSTED

• Hans Christian Oersted

• THOMAS EDISON

Tags

NGSS.HS-PS2-5

STRENGTH OF ELECTROMAGNET DEPENDS ON ---

• STRENGTH OF THE BATTERY

• NO* OF TURNS OF WIRE, THICKNESS OF WIRE.

• NO* OF TURNS OF WIRE, STRENGTH OF THE BATTERY.

• MATERIAL OF THE WIRE

Tags

NGSS.MS-PS2-3