{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\nTransformers and the National Grid _ GCSE Physics\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nDoodleScience\n\n\n
\n
\nElectricity is transferred from power stations to consumers through the wires and cables of the National Grid. When a current flows through a wire some energy is lost as heat. The higher the current, the more heat is lost. To reduce...\nElectricity is transferred from power stations to consumers through the wires and cables of the National Grid. When a current flows through a wire some energy is lost as heat. The higher the current, the more heat is lost. To reduce these losses, the National Grid transmits electricity at a low current and a high voltage. Transformers are used to increase and decrease the voltage of an alternating current. No not those transformers, the boring ones. A transformer that increases the voltage is called a step up transformer and one that decreases the voltage is a step down transformer. Power stations produce electricity at approximately 25,000 Volts. Step up transformers increase the voltage to transmit electricity through the National Grid power lines more efficiently. This reduces energy losses during transmission but the voltages would fry your equipment at home. Step-down transformers are used locally to reduce the voltage to safe levels. In summary, the electricity produced from a power station goes to a step up transformer, the high voltage power cables, a step down transformer and eventually to power the pixels of the screen you're watching this video on.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
0:59
\n
\n
\n
\n
\n
Grade
12th - Higher Ed
\n
\n
\n
\n
\n
Subjects
Science
6 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nDoodleScience\n\n
\n
\n
\n
\n
\n
Date
\n
2013
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
power, electricity, voltage, heat
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
science, current, electric, gcse, physics, power station, national grid, high voltage, high, cables, wire, lost, transformers, increase, decrease, transformer, step, stepped
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Best For: Explaining a topic
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Transformers and the National Grid _ GCSE Physics\" href=\"/subscription/new\">\"Transformers\n\n
\n
\n
\n\n\n\n"}